Car roof



Nov. 28, 1933. Q b, BONSALL 1,937,308

CAR ROOF Filed Aug. 18, 1950 5 5 f2@ /ZQ UNITED stares Patented Nov. 28, 1933 can noon Charles David Bonsall, Pittsburgh, Pa., assigner to P. H. Murphy Company, New Kensington, yPa., a corporation of Pennsylvania Application 'August 1s, 1930. n seria; Namaste 4 Claims.

'This invention relates to all-'steel riveted-upl car roofs-wherein metal roof sheets extend from side to side of the car and haveA overlapped side marginal portions that rest on and are riveted to the tops of inverted'channel-shaped carlines.

.The invention has for its principal objects to provide improved means for securing an insulating lining to the undersides of roofs of the above type, to increase the strength of the carlines, and to provide for simplicity and cheapness of construction and the easy application of the insulating lining to the roof.

The invention consists principally in the means for securing the insulating lining to the roof; and it also consists in the parts and in the coinbinations and arrangements of parts hereinafter described and claimed. v

In the accompanying drawing, which forms part of this specification and wherein like symbols refer to like parts wherever they occur,

Fig. 1 is a plan View of a portion of an insulated car roof embodying my invention,

Fig. 2 is an enlarged transverse cross-section through one-half of the roof on the line 2-f2 of Fig. 1,

Fig. 3 is a vertical longitudinal cross-section through the roof at one of the carlines on the line 3-3 in Fig. 1,

Fig. 4 is a vertical crossTsectional View similar to Fig. 3, showing a modified arrangement for supporting the insulating lining.

The present roof comprises Z-bar side plates 1 that are connected 'by carlines 2 of substantiallyv inverted channeleshaped cross-section with outwardly projecting base flanges 3 at the lower edges of their side walls. The Z-bar side plates 1 are preferably arranged with their webs horizontal and with their inner flanges extending upwardly. The carlines 2 are deepest at the ridge and gradually decrease in depth toward the eaves where they are provided with depending end flanges 4 that overhang and are rigidly secured to the outer faces ofthe upstanding inner flanges of the side plates 1.

Metal roof sheets 5 extend transversely on the car from eaves to eaves and are provided with depending eaves flanges 6 that overhang the upstanding inner flanges of the side plates 1 and the end flanges 4 of the carlines 2 and are rigidlyA secured thereto' by rows rof rivets 7. The roof sheets have their side marginal portions overlapped and rigidly secured together and-to the flat tops of the inverted channel-shaped carlines 2 by rows of rivets 8.

Running boards 9 extend longitudinally of the car 'at the ridge andare supported on the lateral Vtop flanges .of .Z-shaped running board saddles lil whose lateral base flanges rest on. the roof sheets above the carlines 2 andare rigidly secured Ito the carlines by the rows of rivets 8 thatQsecure 60 the lapped margins of said sheets tothe ,tops

of said carlines. n

In the construction shown in Figs. 1 to 3, inc1u` sive, of the accompanying drawing, the bottoms Yof the .inverted channel-shaped carlines 2 are 65 Closed by means of strips 11, preferably of wood,v 'Y which extend longitudinally'of the carlines from side plate to 'side plate and are rigidly secured iiatwise to the undersides of the outstanding base flanges 3 of said carlines by means of bolts 12. By 70 this arrangement, the wooden strips 11 cooperate with the inverted channel-shaped carlines 2 to form hollow box girders, thereby stiiiening the carlines `and increasing the load carrying capacity thereof, the wooden strips forming the tension'f plates o f the hollow box girders. I

The wooden strips 11 not only serve to strengthen and stiffen the carlines 2, and thereby increase their load carrying capacity, but they also serve as nailing strips for attaching an in- 80 sulating lining to the underside of the roof. As shown in Figs. land 3 of the drawing, the insulating lining preferably comprises tongue and groove boards 13 that extend longitudinally of the roof beneath the carlines and are nailed or 85 otherwise secured iiatwise to the bottoms ofthe wooden reinforcing stripsor tension plates 11V of the carlines 2;

In vthemodified construction shown in Fig. 4, the insulating Ilining boards 13a extend between 9 0 carlines 2 with their ends supported on wooden -i strips 14 that extend 'longitudinally of the carlines from side plate to sideplate and rest on and are secured to the lateral base flanges 3 of the carlines by means of bolts 12a., which also serve 95 to secure the wooden closure strips or tension plates 11 to the bottoms of the carlines. By this arrangement, the insulating lining 13a is located above the bottoms of the carlines, thereby increasing the headroom of' the car between car- 100 lines, while the supporting strips 14 for said lining serve to impart additional strength and rigidity to the carlines. y

, An importantadvantage of the hereinbefore described arrangements is that the increased car- 105 line strength obtained by the use of the reinforcl v ing strips enables the depth of the carlines to be reduced without reducing their carrying capacity, thereby enabling the insulating lining to be used without -greatlydecreasing the headroom. 1in-H110I other advantage of the foregoing arrangements is that they permit the combined nailing and reinforcing strips to be quickly and easily attached to the carlines or to the roof sheets and readily removed and replaced without disturbing the carlines or roof sheets.

What I claim is:

1. A car roof comprising side plates connected by carlines of inverted channel-shaped crosssection, roof sheets supported on said carlines, Wooden reinforcing strips extending from side plate to side plate beneath said carlines and rigidly secured to the bottomsthereof and closing the channels therein, and an insulating lining located beneath said carlines and secured to said reinforcing strips. Y

2. A car roof comprising side plates connected by inverted channel-shaped carlines provided with outstanding base flanges, roof sheets 'supported by said carlines, reinforcing strips extend- 'ing from side plate to side plate beneath said carlines and closing the channels therein, said strips being rigidly secured to the base iianges of said carlines, and an insulating lining located beneath said cargroof and secured to said reinforcing strips.

3. A car roof comprising carlines extending' from side plate to side plate of the car, roof sheets extending from side plate to side plate and rivetel to the tops of said carlines along a single line, and an insulating lining spaced below said sheets and operatively connected to said carlines to be sustained thereby, each carline comprising an inverted channel-shaped metal member with lateral flanges and a wooden member extending longitudinally of the carline and secured against the undersides of said flanges.

4. A car roof comprising carlines extending from side plate to side plate of the car, each carline comprising an inverted channel-shaped member of metal With lateral side iianges and a wooden member extending longitudinally of the metal member and bolts rigidly securing said wooden member to the undersides of both of said flanges, metal roof sheets extending from side plate to side plate and riveted in a single line tothe tops of said carlines, an insulating lining spaced below said sheets, and means for operatively connecting said lining to said carlines to be sustained thereby, said lining covering one end of said bolts.

CHARLES DAVID BONSALL. 

